ETRA821/18503

Return Loss:	-10dB
Applications:	--
Height (Max):	2.700" (68.58mm)
Mounting Type:	Base Mount
Ingress Protection:	--
Termination:	Connector, NMO
Features:	--
Power - Max:	100W
Gain:	3dBi
Series:	Phantom Elite®
VSWR:	2
Number of Bands:	2
Antenna Type:	Whip, Straight
Frequency Range:	821MHz ~ 896MHz, 1.85GHz ~ 1.99GHz
Frequency (Center/Band):	858MHz, 1.9GHz
Frequency Group:	UHF (300 MHz ~ 1 GHz), UHF (1 GHz ~ 2 GHz)
Part Status:	Active
Packaging:	Bulk

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Introduction

ETRA821/18503 is a type of RF antenna designed specifically for the operation of wireless radios, such as the General Mobile Radio Service (GMRS). This RF antenna delivers the most advanced efficiencies in the 2-way radio market, providing superior performance to all other antenna types.The purpose of this article is to provide an in-depth look at the ETRA821/18503 RF antenna, its application field and its working principle. We will discuss the various features this antenna brings to the table, such as its superior gain, frequency range, and its beamwidth. We will also discuss the ways the antenna operates and its compatibility with other RF devices.

ETRA821/18503 Application Field

The ETRA821/18503 is a high-performance RF antenna rated for GMRS-level frequencies. It is specifically designed for use in environments where signals must be relayed over long-range distances, such as in the mountains or a forest.The ETRA821/18503 antenna has a wide frequency range of 915 MHz to 920 MHz, which ensures that it can deliver a strong signal even in areas with extreme terrain. This also means that it is capable of handling more than one GMRS frequency, making it ideal for the operation of multichannel radios.The antenna has been designed for high performance and is capable of delivering superior reception and transmission compared to traditional antennas. The antenna also has a large beamwidth of 55 degrees, allowing it to cover up to a 3 mile radius.

ETRA821/18503 Working Principle

The ETRA821/18503 operates using a directional linear polarized configuration. This means that the signal is split into two waveforms and radiates from the antenna in two distinct directions. This helps improve the antenna\'s efficiency by allowing it to transmit and receive a larger amount of signal over a greater distance.The antenna also utilizes an elliptical cross-section balanced reflector, which helps reduce interference and improve reception. The reflector works by creating a symmetrical radiating pattern that is electrically balanced. This helps to reduce the possibility of interference from nearby sources and improves the antenna\'s efficiency.The antenna also features two separate ports for connecting it with other RF devices. The first port is a standard connector and the second is an "extended" port, which is used for a wider frequency range. This makes it possible to connect the antenna to multiple devices at once and to switch between frequencies easily.

Conclusion

The ETRA821/18503 is a high-performance RF antenna designed specifically for use with wireless radios. Due to its large frequency and beamwidth, it is ideal for applications where signal must be relayed over long distances. The antenna also features two ports which allow for the connection of multiple devices. Its extraordinary performance and features make it the ideal choice for those looking for a reliable, high-performance antenna.

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